rust: bindgen: Exclude list functions with unsupported ABIs

CONFIG_LIST_HARDENED causes certain list functions to use what bindgen
considers an unsupported ABI:

panicked at 'Invalid or unknown abi 14 for function
"__list_del_entry_valid_or_report" (Function { name:
"__list_del_entry_valid_or_report", mangled_name:
Some("__list_del_entry_valid_or_report"), link_name:
None, signature: TypeId(ItemId(38153)), kind: Function,
linkage: External })',
/usr/share/cargo/registry/bindgen-0.68.1/codegen/mod.rs:4195:17

Exclude these, since they are internal functions we don't use directly
anyway.

Signed-off-by: Asahi Lina <lina@asahilina.net>

Author: hoshinolina

rust/bindgen_parameters

@@ -34,3 +34,7 @@
 # We use const helpers to aid bindgen, to avoid conflicts when constants are
 # recognized, block generation of the non-helper constants.
 --blocklist-item ARCH_SLAB_MINALIGN
+# CONFIG_LIST_HARDENED triggers "Invalid or unknown abi 14" for these
+--blocklist-function __list_valid_slowpath
+--blocklist-function __list_add_valid_or_report
+--blocklist-function __list_del_entry_valid_or_report